SketchEl!(4,4)
C=3.6500,-0.9500;0,0
C=3.6500,-2.4500;0,0
C=5.1500,-2.4500;0,0
C=5.1500,-0.9500;0,0
1-2=1,0
2-3=1,0
3-4=1,0
1-4=1,0
!End
